7th - Ratios & Proportionality Module 1 TEST

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division, showing how many times one value contains or is contained within the other.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per' something, like miles per hour or cost per item.

Front

How do you calculate the unit rate from a total cost and quantity?

Back

To find the unit rate, divide the total cost by the quantity. For example, if 15 apples cost $3.75, the unit rate is $3.75 ÷ 15 = $0.25 per apple.

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where their ratio remains constant.

Front

How do you find the area of a rectangle?

Back

The area of a rectangle is found by multiplying its length by its width. Area = length × width.

Front

What is the scale factor in geometry?

Back

A scale factor is a number that scales, or multiplies, some quantity. It is used to enlarge or reduce figures.

Front

If a rectangle has a width of 4 units and a length of 8 units, what is its area?

Back

The area is 4 units × 8 units = 32 square units.

Front

What is the formula for finding the cost of bagels if 5 bagels cost $7.00?

Back

The formula is c = 1.4b, where c is the cost in dollars and b is the number of bagels.

Front

How do you determine the unit price of an item?

Back

To determine the unit price, divide the total price by the total weight or quantity. For example, if a bag of candy weighs 3/8 lb and costs $1.20, the unit price per pound is $1.20 ÷ (3/8) = $3.20.

Front

What does it mean if two quantities are in a proportional relationship?

Back

It means that as one quantity increases or decreases, the other quantity does so in a consistent manner, maintaining the same ratio.